14,278 results match your criteria: "and Blood Institute.[Affiliation]"

The BMT CTN 1703 phase III trial confirmed that graft-versus-host disease (GVHD) prophylaxis with post-transplantation cyclophosphamide (PTCy), tacrolimus (Tac), and mycophenolate mofetil (MMF) results in superior GVHD-free, relapse-free survival (GRFS) compared with Tac/methotrexate (MTX) prophylaxis. This companion study assesses the effect of these regimens on patient-reported outcomes (PROs). Using the Lee Chronic GVHD Symptom Score and PROMIS subscales (physical function, GI symptoms, social role satisfaction) as primary end points and hemorrhagic cystitis symptoms and Lee subscales as secondary end points, responses from English and Spanish speakers were analyzed at baseline and days 100, 180, and 365 after transplant.

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Mitochondrial endonuclease G (EndoG) contributes to chromosomal degradation when it is released from mitochondria during apoptosis. It is presumed to also have a mitochondrial function because EndoG deficiency causes mitochondrial dysfunction. However, the mechanism by which EndoG regulates mitochondrial function is not known.

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Exposure to pulmonary tuberculosis (PTB) culminates in heterogeneous outcomes, including variation in Mtb antigen-specific interferon-gamma (IFN-γ) T-cell responses. IFN-γ-independent cytokines, including tumor necrosis factor (TNF) and interleukin (IL-2), offer potential diagnostic improvements and insights into pathogenesis. We hypothesized that ESAT6/CFP10 TNF and IL-2 responses improve Mtb infection detection among exposed household contacts (HHCs) and are associated with index case Mtb aerosolization (i.

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Humans have, throughout history, faced periods of starvation necessitating increased physical effort to gather food. To explore adaptations in muscle function, 13 participants (7 males and 6 females) fasted for seven days. They lost 4.

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Deep learning-based aberration compensation improves contrast and resolution in fluorescence microscopy.

Nat Commun

January 2025

Laboratory of High Resolution Optical Imaging, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland, USA.

Optical aberrations hinder fluorescence microscopy of thick samples, reducing image signal, contrast, and resolution. Here we introduce a deep learning-based strategy for aberration compensation, improving image quality without slowing image acquisition, applying additional dose, or introducing more optics. Our method (i) introduces synthetic aberrations to images acquired on the shallow side of image stacks, making them resemble those acquired deeper into the volume and (ii) trains neural networks to reverse the effect of these aberrations.

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Article Synopsis
  • B cells can be engineered to produce therapies for genetic disorders, metabolic diseases, and cancer.
  • A method was developed to collect, expand, differentiate, and track B cells from non-human primates (NHPs) using radioactively labeled imaging techniques.
  • The study showed that infused B cells successfully targeted the bone marrow, spleen, and liver without serious side effects, indicating the potential for repeated treatments and the viability of NHPs as a model for human B cell medicine research.
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Background: Smartphone apps can be used to monitor chronic conditions and offer opportunities for self-assessment conveniently at home. However, few digital studies include older adults.

Objective: We aim to describe a new electronic cohort of older adults embedded in the Framingham Heart Study including baseline smartphone survey return rates and survey completion rates by smartphone type (iPhone [Apple Inc] and Android [Google LLC] users).

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Tsg101 mimicry of canonical E2 enzymes underlies its role in ubiquitin signaling.

Proc Natl Acad Sci U S A

January 2025

Department of Microbiology and Immunology, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794-5222.

Tsg101 is a highly conserved protein best known as an early-functioning component of cellular ESCRT machinery participating in recognition, sorting, and trafficking of cellular cargo to various intracellular destinations. It shares sequence and structural homology to canonical ubiquitin-conjugating (E2) enzymes and is linked to diverse events regulated by Ub signaling. How it might fulfill these roles is unclear.

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Hermansky-Pudlak syndrome type 1 (HPS-1) is a rare, autosomal recessive disorder caused by defects in the biogenesis of lysosome-related organelles complex-3 (BLOC-3). Impaired kidney function is among its clinical manifestations. To investigate HPS-1 renal involvement, we employed 1D-gel-LC-MS/MS and compared the protein composition of urinary extracellular vesicles (uEVs) from HPS-1 patients to normal control individuals.

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Modeling predicts facile release of nitrite but not nitric oxide from the thionitrate CHSNO with relevance to nitroglycerin bioactivation.

Sci Rep

December 2024

Department of Chemistry and Biochemistry, Centre for Research in Molecular Modeling (CERMM), Concordia University, 7141 Sherbrooke Street West, Montréal, QC, H4B 1R6, Canada.

Nitroglycerin is a potent vasodilator in clinical use since the late 1800s. It functions as a prodrug that is bioactivated by formation of an enzyme-based thionitrate, E-Cys-NO. This intermediate reportedly decomposes to release NO and NO but their relative yields remain controversial.

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Orthologs of and impact sleep in mice.

Sleep Adv

December 2024

Murine Phenotyping Core, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA.

Model organisms such as are powerful tools to study the genetic basis of sleep. Previously, we identified the genes and using selective breeding for long and short sleep duration in an outbred population of . is a transcription factor that is part of the epidermal growth factor receptor signaling pathway, while is involved in proline and arginine metabolism.

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Gene therapy for sickle cell disease: recent advances, clinical trials and future directions.

Cytotherapy

December 2024

Molecular and Clinical Hematology Branch, National Heart, Lung, and Blood Institute, Bethesda, Maryland, USA.

Sickle cell disease (SCD) is the most common inherited blood disorder worldwide, impacting millions and imposing severe healthcare challenges, particularly in resource-limited regions. Current treatments have variable efficacy and require lifelong adherence. Allogeneic Hematopoietic Stem Cell Transplantation can be curative but comes with significant side effects and limited donor availability limits its widespread applicability.

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Mitochondrial biogenesis requires the expression of genes encoded by both the nuclear and mitochondrial genomes. However, aside from a handful transcription factors regulating specific subsets of mitochondrial genes, the overall architecture of the transcriptional control of mitochondrial biogenesis remains to be elucidated. The mechanisms coordinating these two genomes are largely unknown.

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Haemodynamic and hyperaemic effects of adenosine in patients with atrial fibrillation undergoing quantitative myocardial perfusion cardiovascular magnetic resonance.

Eur Heart J Imaging Methods Pract

July 2024

Department of Cardiovascular Sciences, University of Leicester and the National Institute for Health Research Leicester Biomedical Research Centre, Glenfield Hospital, Leicester LE3 9QP, UK.

Aims: Patients with atrial fibrillation (AF) are thought to have an attenuated response to adenosine during vasodilator stress testing. We sought to investigate the haemodynamic and hyperaemic effects of adenosine in patients with AF undergoing adenosine-stress cardiovascular magnetic resonance (CMR) assessment.

Methods And Results: We retrospectively examined 318 patients referred for clinical adenosine-stress CMR (AF = 158, sinus rhythm [SR] = 160).

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Human induced pluripotent stem cell (iPSC) lines TRNDi037-A and TRNDi038-A were generated from the lymphoblastoid cell lines (LCL) of two patients with different heterozygous JAG1 variants resulting in Alagille syndrome (ALGS). ALGS is a rare genetic disease of haploinsufficiency that affects the formation of the bile duct, in addition to other symptoms. These ALGS iPSC lines can be used to model ALGS and aid in the identification of therapeutics to treat patients with ALGS.

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African American (AA) women are disproportionally affected by obesity and hyperlipidemia, particularly in the setting of adverse social determinants of health (aSDoH) contributing to health disparities. Obesity, hyperlipidemia, and aSDoH appear to impair Natural Killer cells (NKs). As potential common underlying mechanisms are largely unknown, we sought to investigate common signaling pathways involved in NK dysfunction related to obesity and hyperlipidemia in AA women from under-resourced neighborhoods.

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Resistance to chimaeric antigen receptor (CAR) T cell therapy develops through multiple mechanisms, most notably antigen loss and tumour-induced immune suppression. It has been suggested that T cells expressing multiple CARs may overcome the resistance of tumours and that T cells expressing receptors that switch inhibitory immune-checkpoint signals into costimulatory signals may enhance the activity of the T cells in the tumour microenvironment. However, engineering multiple features into a single T cell product is difficult because of the transgene-packaging constraints of current gene-delivery vectors.

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Background: Multimorbidity is common in patients with atrial fibrillation (AF), yet comorbidity patterns are not well documented.

Methods: The prevalence of 18 chronic conditions (6 cardiometabolic, 7 other somatic, 5 mental health) was obtained in patients with new-onset AF from 2013-2017 from a 27-county region and controls matched 1:1 on age, sex, and county of residence. For AF patients and controls separately, clustering of conditions and co-occurrence beyond chance was estimated (using the asymmetric Somers' D statistic), overall and for ages <65, 65-74, 75-84, and ≥85 years.

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Expression, Purification, and In Vitro Analysis of Myosin.

Methods Mol Biol

December 2024

Astbury Centre for Structural and Molecular Biology, University of Leeds, Leeds, UK.

Article Synopsis
  • The chapter explains the process of expressing and purifying myosin, a type of cytoskeletal molecular motor, using an insect cell system.
  • It details methods for characterizing the quality of the purified myosin through techniques like mass photometry and negative-stain electron microscopy (EM).
  • Lastly, it describes how to conduct in vitro assays to observe how fluorescently labeled myosin moves along actin tracks and mentions adapting these assays for MINFLUX imaging.
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Background: Neighborhood characteristics serve as risk factors for metabolic syndrome (MetS). However, the intermediary factors linking this relationship remain understudied. Thus, we investigated the sex-specific mediating role of C-reactive protein, physical activity (PA), and perceived stress in the associations of perceived neighborhood social environment (PNSE) with MetS severity among Black adults.

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Individuals with sickle cell disease (SCD) have a unique type of dyslipidemia characterized by low total cholesterol (TC), low low-density lipoprotein cholesterol (LDL-c), low high-density lipoprotein cholesterol (HDL-c), and normal triglycerides (TG). This lipid state is theorized to be cardioprotective against atherosclerosis. In SCD, hematopoietic cell transplant (HCT) offers a potentially curative therapy.

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A deficiency screen identifies genomic regions critical for sperm head-tail connection.

G3 (Bethesda)

December 2024

Cell and Developmental Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.

The Sperm Neck provides a stable connection between the sperm head and tail, which is critical for fertility in species with flagellated sperm. Within the Sperm Neck, the Head-Tail Coupling Apparatus serves as the critical link between the nucleus (head) and the axoneme (tail) via the centriole. To identify regions of the Drosophila melanogaster genome that contain genetic elements that influence Head-Tail Coupling Apparatus formation, we undertook a 2 part screen using the Drosophila Deficiency kit.

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Cardiac ischemia followed by reperfusion results in cardiac cell death, which has been attributed to an increase of mitochondrial Ca2+ concentration, resulting in activation of the mitochondrial permeability transition pore (PTP). Evaluating this hypothesis requires understanding of the mechanisms responsible for control of mitochondrial Ca2+ in physiological conditions and how they are altered during both ischemia and reperfusion. Ca2+ influx is thought to occur through the mitochondrial Ca2+ uniporter (MCU).

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